3 555 random reset counting up LCD

169

01:24:39

Counts up then at some point it resets.
2 of the 555 outputs are connected to a and gate. The and gate connected to the two chips that count up. The timmer connected to reset after some time it will pulse and reset the LCD. The other 2 555 chips are set to a way were they will pulse at a close time but other times they will pulse at a different time. Only when they pulse at the same time will it count up. After a bit of time it will reset and start over again. 

Please tell me of you can find a pattern for this I can't seem to find one. Thanks for looking at the circuit.

published 11 years ago

fabio76

11 years ago

do I insert the ci 555, in my version of the program I can not.

z_man32

11 years ago

I dobt understand what you are asking

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